bsc信道的2/3卷积码matlab仿真

clc;
close all;
    
%基带信号
codeRate = 2/3;
traceBack = 15;
num_baseband = 100000000;
num_baseband_fec = num_baseband / codeRate;
%test para
times = 200;
err_probability_step = 0.001;
recive_codeword_1 = zeros（num_baseband_fec1）;
recive_codeword_2 = zeros（num_baseband_fec1）;
ber_1 = zeros（times1）;
ber_2 = zeros（times1）;
err_ratio_1 = zeros（times1）;
err_ratio_2 = zeros（times1）;

err_probability = （0:err_probability_step:（times - 1） * err_probability_step）;
data_ori = randi（[0 1]num_baseband1）;

tPoly_1 = poly2trellis（[3 3][7 2 5; 6 5 1]）;
tPoly_2 = poly2trellis（[3 3][7 1 4; 2 5 7]）;

hVitDec_1 = comm.ViterbiDecoder（tPoly_1 ‘InputFormat‘‘hard‘ ‘TracebackDepth‘...
    traceBack ‘TerminationMethod‘ ‘Truncated‘）;
hVitDec_2 = comm.ViterbiDecoder（tPoly_2 ‘InputFormat‘‘hard‘ ‘TracebackDepth‘...
    traceBack ‘TerminationMethod‘ ‘Truncated‘）;

% codeword_1 = hEnc_1（data_ori）;
% codeword_2 = hEnc_2（data_ori）;